The IRS is using a theory of value where software (1) is a capital asset (okay, sure), (2) has a six-year deprecation schedule (uhhh why not 5 like everything else?), and (3) is valued at the exact cost of all inputs to it, including salaries (uh oh).
This is unlike how capital assets are valued for any other industry! And it has the effect that hiring a second lawyer is “cheaper” (for five years anyway) than hiring a second developer.